What Is Powdery Mildew?
Powdery Mildew fungi are found on many native plants, cultivated crops, ornamentals, and Turfgrass species. In general, it is not considered to be a serious disease on turf.
What Do You Have Powdery Mildew?
Severe outbreaks of Powdery Mildew on Kentucky Bluegrass tend to occur on turf growing in shaded areas during the late Spring or middle of Fall, when temperatures and humidity are high.
What Can You Do About Powdery Mildew?
To help protect your lawn from Powdery Mildew we recommend the following.
- Don't water more than every 3-4 days each week, and only in the morning.
- Reduce the amount of shade by trimming trees to let more light into the area.
- Seed with Turf Type Tall Fescue, which is more disease-resistant than Kentucky Bluegrass.
- Try Slice Seeding, which establishes stronger grass types to combat disease.
- Core aerate your lawn and apply Liquid Aeration products to help water reach the roots.
- Try Organic Compost Topdressing, which provides soil biology to compete with the fungus.